Question 23

Explanation

✅ Query Processing Layer

Explanation:

The Query Processing Layer in Snowflake is responsible for query optimization and execution. It uses Massively Parallel Processing (MPP) to distribute workloads across compute clusters (virtual warehouses), ensuring high performance and scalability.

Here’s how it fits into Snowflake’s 3-layer architecture:

1. Database Storage Layer – Stores data in optimized, compressed, columnar format

2. Query Processing Layer – Executes SQL queries and handles optimization

3. Cloud Services Layer – Manages metadata, authentication, access control, and query compilation

❌ The Cloud Services Layer handles query parsing and compilation but not execution
❌ The Database Storage Layer is for persistent data storage
❌ The Client Layer isn’t a formal part of Snowflake’s architecture

You can explore this further in Snowflake’s architecture documentation .